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<title>OpenCV: cv::img_hash::RadialVarianceHash Class Reference</title>
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<li class="navelem"><a class="el" href="../../d2/d75/namespacecv.html">cv</a></li><li class="navelem"><a class="el" href="../../de/d85/namespacecv_1_1img__hash.html">img_hash</a></li><li class="navelem"><a class="el" href="../../d5/d97/classcv_1_1img__hash_1_1RadialVarianceHash.html">RadialVarianceHash</a></li>  </ul>
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<div class="header">
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<a href="#pub-methods">Public Member Functions</a> |
<a href="#pub-static-methods">Static Public Member Functions</a> |
<a href="#pro-methods">Protected Member Functions</a> |
<a href="../../d4/d12/classcv_1_1img__hash_1_1RadialVarianceHash-members.html">List of all members</a>  </div>
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<div class="title">cv::img_hash::RadialVarianceHash Class Reference<div class="ingroups"><a class="el" href="../../d4/d93/group__img__hash.html">The module brings implementations of different image hashing algorithms.</a></div></div>  </div>
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<p>Image hash based on Radon transform.  
 <a href="../../d5/d97/classcv_1_1img__hash_1_1RadialVarianceHash.html#details">More...</a></p>
<p><code>#include &lt;opencv2/img_hash/radial_variance_hash.hpp&gt;</code></p>
<div class="dynheader">
Inheritance diagram for cv::img_hash::RadialVarianceHash:</div>
<div class="dyncontent">
 <div class="center">
  <img alt="" src="../../d5/d97/classcv_1_1img__hash_1_1RadialVarianceHash.png" usemap="#cv::img_5Fhash::RadialVarianceHash_map"/>
  <map id="cv::img_5Fhash::RadialVarianceHash_map" name="cv::img_5Fhash::RadialVarianceHash_map">
<area alt="cv::img_hash::ImgHashBase" coords="0,56,207,80" href="../../de/d29/classcv_1_1img__hash_1_1ImgHashBase.html" shape="rect" title="The base class for image hash algorithms. "/>
<area alt="cv::Algorithm" coords="0,0,207,24" href="../../d3/d46/classcv_1_1Algorithm.html" shape="rect" title="This is a base class for all more or less complex algorithms in OpenCV. "/>
</map>
 </div></div>
<table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-methods"></a>
Public Member Functions</h2></td></tr>
<tr class="memitem:aa85ee11346410e4bec2f437cb2e75e44"><td align="right" class="memItemLeft" valign="top">std::vector&lt; double &gt; </td><td class="memItemRight" valign="bottom"><a class="el" href="../../d5/d97/classcv_1_1img__hash_1_1RadialVarianceHash.html#aa85ee11346410e4bec2f437cb2e75e44">getFeatures</a> ()</td></tr>
<tr class="separator:aa85ee11346410e4bec2f437cb2e75e44"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ae8884fdd9bcb62286daf1a2461855317"><td align="right" class="memItemLeft" valign="top"><a class="el" href="../../d3/d63/classcv_1_1Mat.html">cv::Mat</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="../../d5/d97/classcv_1_1img__hash_1_1RadialVarianceHash.html#ae8884fdd9bcb62286daf1a2461855317">getHash</a> ()</td></tr>
<tr class="separator:ae8884fdd9bcb62286daf1a2461855317"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a67e45e67643485206c3bd61109653162"><td align="right" class="memItemLeft" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="../../d5/d97/classcv_1_1img__hash_1_1RadialVarianceHash.html#a67e45e67643485206c3bd61109653162">getNumOfAngleLine</a> () const</td></tr>
<tr class="separator:a67e45e67643485206c3bd61109653162"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a163981931cdd85663d314ed006cae01c"><td align="right" class="memItemLeft" valign="top"><a class="el" href="../../d3/d63/classcv_1_1Mat.html">Mat</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="../../d5/d97/classcv_1_1img__hash_1_1RadialVarianceHash.html#a163981931cdd85663d314ed006cae01c">getPixPerLine</a> (<a class="el" href="../../d3/d63/classcv_1_1Mat.html">Mat</a> const &amp;input)</td></tr>
<tr class="separator:a163981931cdd85663d314ed006cae01c"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:aeec876c879462e4d44bad94a46033786"><td align="right" class="memItemLeft" valign="top"><a class="el" href="../../d3/d63/classcv_1_1Mat.html">Mat</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="../../d5/d97/classcv_1_1img__hash_1_1RadialVarianceHash.html#aeec876c879462e4d44bad94a46033786">getProjection</a> ()</td></tr>
<tr class="separator:aeec876c879462e4d44bad94a46033786"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:abe71d8fd951ee0c0277fea4f339e2242"><td align="right" class="memItemLeft" valign="top">double </td><td class="memItemRight" valign="bottom"><a class="el" href="../../d5/d97/classcv_1_1img__hash_1_1RadialVarianceHash.html#abe71d8fd951ee0c0277fea4f339e2242">getSigma</a> () const</td></tr>
<tr class="separator:abe71d8fd951ee0c0277fea4f339e2242"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a177638c49d134ca7f0e5624b30c8bff6"><td align="right" class="memItemLeft" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="../../d5/d97/classcv_1_1img__hash_1_1RadialVarianceHash.html#a177638c49d134ca7f0e5624b30c8bff6">setNumOfAngleLine</a> (int value)</td></tr>
<tr class="separator:a177638c49d134ca7f0e5624b30c8bff6"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a220ddf8070bf024ef24d23a14d41b9b7"><td align="right" class="memItemLeft" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="../../d5/d97/classcv_1_1img__hash_1_1RadialVarianceHash.html#a220ddf8070bf024ef24d23a14d41b9b7">setSigma</a> (double value)</td></tr>
<tr class="separator:a220ddf8070bf024ef24d23a14d41b9b7"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="inherit_header pub_methods_classcv_1_1img__hash_1_1ImgHashBase"><td colspan="2" onclick="javascript:toggleInherit('pub_methods_classcv_1_1img__hash_1_1ImgHashBase')"><img alt="-" src="../../closed.png"/> Public Member Functions inherited from <a class="el" href="../../de/d29/classcv_1_1img__hash_1_1ImgHashBase.html">cv::img_hash::ImgHashBase</a></td></tr>
<tr class="memitem:addf4706f1e51b2f2b82601353b58e311 inherit pub_methods_classcv_1_1img__hash_1_1ImgHashBase"><td align="right" class="memItemLeft" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="../../de/d29/classcv_1_1img__hash_1_1ImgHashBase.html#addf4706f1e51b2f2b82601353b58e311">~ImgHashBase</a> ()</td></tr>
<tr class="separator:addf4706f1e51b2f2b82601353b58e311 inherit pub_methods_classcv_1_1img__hash_1_1ImgHashBase"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a444a3e9ec792cf029385809393f84ad5 inherit pub_methods_classcv_1_1img__hash_1_1ImgHashBase"><td align="right" class="memItemLeft" valign="top">double </td><td class="memItemRight" valign="bottom"><a class="el" href="../../de/d29/classcv_1_1img__hash_1_1ImgHashBase.html#a444a3e9ec792cf029385809393f84ad5">compare</a> (<a class="el" href="../../dc/d84/group__core__basic.html#ga353a9de602fe76c709e12074a6f362ba">cv::InputArray</a> hashOne, <a class="el" href="../../dc/d84/group__core__basic.html#ga353a9de602fe76c709e12074a6f362ba">cv::InputArray</a> hashTwo) const</td></tr>
<tr class="memdesc:a444a3e9ec792cf029385809393f84ad5 inherit pub_methods_classcv_1_1img__hash_1_1ImgHashBase"><td class="mdescLeft"> </td><td class="mdescRight">Compare the hash value between inOne and inTwo.  <a href="../../de/d29/classcv_1_1img__hash_1_1ImgHashBase.html#a444a3e9ec792cf029385809393f84ad5">More...</a><br/></td></tr>
<tr class="separator:a444a3e9ec792cf029385809393f84ad5 inherit pub_methods_classcv_1_1img__hash_1_1ImgHashBase"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ae2d9288db370089dfd8aab85d5e0b0f3 inherit pub_methods_classcv_1_1img__hash_1_1ImgHashBase"><td align="right" class="memItemLeft" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="../../de/d29/classcv_1_1img__hash_1_1ImgHashBase.html#ae2d9288db370089dfd8aab85d5e0b0f3">compute</a> (<a class="el" href="../../dc/d84/group__core__basic.html#ga353a9de602fe76c709e12074a6f362ba">cv::InputArray</a> inputArr, <a class="el" href="../../dc/d84/group__core__basic.html#gaad17fda1d0f0d1ee069aebb1df2913c0">cv::OutputArray</a> outputArr)</td></tr>
<tr class="memdesc:ae2d9288db370089dfd8aab85d5e0b0f3 inherit pub_methods_classcv_1_1img__hash_1_1ImgHashBase"><td class="mdescLeft"> </td><td class="mdescRight">Computes hash of the input image.  <a href="../../de/d29/classcv_1_1img__hash_1_1ImgHashBase.html#ae2d9288db370089dfd8aab85d5e0b0f3">More...</a><br/></td></tr>
<tr class="separator:ae2d9288db370089dfd8aab85d5e0b0f3 inherit pub_methods_classcv_1_1img__hash_1_1ImgHashBase"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="inherit_header pub_methods_classcv_1_1Algorithm"><td colspan="2" onclick="javascript:toggleInherit('pub_methods_classcv_1_1Algorithm')"><img alt="-" src="../../closed.png"/> Public Member Functions inherited from <a class="el" href="../../d3/d46/classcv_1_1Algorithm.html">cv::Algorithm</a></td></tr>
<tr class="memitem:a827c8b2781ed17574805f373e6054ff1 inherit pub_methods_classcv_1_1Algorithm"><td align="right" class="memItemLeft" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="../../d3/d46/classcv_1_1Algorithm.html#a827c8b2781ed17574805f373e6054ff1">Algorithm</a> ()</td></tr>
<tr class="separator:a827c8b2781ed17574805f373e6054ff1 inherit pub_methods_classcv_1_1Algorithm"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a8ae826127fa0f1f8d10a24841bd376f8 inherit pub_methods_classcv_1_1Algorithm"><td align="right" class="memItemLeft" valign="top">virtual </td><td class="memItemRight" valign="bottom"><a class="el" href="../../d3/d46/classcv_1_1Algorithm.html#a8ae826127fa0f1f8d10a24841bd376f8">~Algorithm</a> ()</td></tr>
<tr class="separator:a8ae826127fa0f1f8d10a24841bd376f8 inherit pub_methods_classcv_1_1Algorithm"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:aec9c965448e4dc851d7cacd3abd84cd1 inherit pub_methods_classcv_1_1Algorithm"><td align="right" class="memItemLeft" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="../../d3/d46/classcv_1_1Algorithm.html#aec9c965448e4dc851d7cacd3abd84cd1">clear</a> ()</td></tr>
<tr class="memdesc:aec9c965448e4dc851d7cacd3abd84cd1 inherit pub_methods_classcv_1_1Algorithm"><td class="mdescLeft"> </td><td class="mdescRight">Clears the algorithm state.  <a href="../../d3/d46/classcv_1_1Algorithm.html#aec9c965448e4dc851d7cacd3abd84cd1">More...</a><br/></td></tr>
<tr class="separator:aec9c965448e4dc851d7cacd3abd84cd1 inherit pub_methods_classcv_1_1Algorithm"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ab6a18f1825475643e94381697d413972 inherit pub_methods_classcv_1_1Algorithm"><td align="right" class="memItemLeft" valign="top">virtual bool </td><td class="memItemRight" valign="bottom"><a class="el" href="../../d3/d46/classcv_1_1Algorithm.html#ab6a18f1825475643e94381697d413972">empty</a> () const</td></tr>
<tr class="memdesc:ab6a18f1825475643e94381697d413972 inherit pub_methods_classcv_1_1Algorithm"><td class="mdescLeft"> </td><td class="mdescRight">Returns true if the <a class="el" href="../../d3/d46/classcv_1_1Algorithm.html" title="This is a base class for all more or less complex algorithms in OpenCV. ">Algorithm</a> is empty (e.g. in the very beginning or after unsuccessful read.  <a href="../../d3/d46/classcv_1_1Algorithm.html#ab6a18f1825475643e94381697d413972">More...</a><br/></td></tr>
<tr class="separator:ab6a18f1825475643e94381697d413972 inherit pub_methods_classcv_1_1Algorithm"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a286fc82744ccab3d248aca44524266a9 inherit pub_methods_classcv_1_1Algorithm"><td align="right" class="memItemLeft" valign="top">virtual <a class="el" href="../../dc/d84/group__core__basic.html#ga1f6634802eeadfd7245bc75cf3e216c2">String</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="../../d3/d46/classcv_1_1Algorithm.html#a286fc82744ccab3d248aca44524266a9">getDefaultName</a> () const</td></tr>
<tr class="separator:a286fc82744ccab3d248aca44524266a9 inherit pub_methods_classcv_1_1Algorithm"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:aef2ad3f4145bd6e8c3664eb1c4b5e1e6 inherit pub_methods_classcv_1_1Algorithm"><td align="right" class="memItemLeft" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="../../d3/d46/classcv_1_1Algorithm.html#aef2ad3f4145bd6e8c3664eb1c4b5e1e6">read</a> (const <a class="el" href="../../de/dd9/classcv_1_1FileNode.html">FileNode</a> &amp;fn)</td></tr>
<tr class="memdesc:aef2ad3f4145bd6e8c3664eb1c4b5e1e6 inherit pub_methods_classcv_1_1Algorithm"><td class="mdescLeft"> </td><td class="mdescRight">Reads algorithm parameters from a file storage.  <a href="../../d3/d46/classcv_1_1Algorithm.html#aef2ad3f4145bd6e8c3664eb1c4b5e1e6">More...</a><br/></td></tr>
<tr class="separator:aef2ad3f4145bd6e8c3664eb1c4b5e1e6 inherit pub_methods_classcv_1_1Algorithm"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a0a880744bc4e3f45711444571df47d67 inherit pub_methods_classcv_1_1Algorithm"><td align="right" class="memItemLeft" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="../../d3/d46/classcv_1_1Algorithm.html#a0a880744bc4e3f45711444571df47d67">save</a> (const <a class="el" href="../../dc/d84/group__core__basic.html#ga1f6634802eeadfd7245bc75cf3e216c2">String</a> &amp;filename) const</td></tr>
<tr class="separator:a0a880744bc4e3f45711444571df47d67 inherit pub_methods_classcv_1_1Algorithm"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a1f8ad7b8add515077367fb9949a174d2 inherit pub_methods_classcv_1_1Algorithm"><td align="right" class="memItemLeft" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="../../d3/d46/classcv_1_1Algorithm.html#a1f8ad7b8add515077367fb9949a174d2">write</a> (<a class="el" href="../../da/d56/classcv_1_1FileStorage.html">FileStorage</a> &amp;fs) const</td></tr>
<tr class="memdesc:a1f8ad7b8add515077367fb9949a174d2 inherit pub_methods_classcv_1_1Algorithm"><td class="mdescLeft"> </td><td class="mdescRight">Stores algorithm parameters in a file storage.  <a href="../../d3/d46/classcv_1_1Algorithm.html#a1f8ad7b8add515077367fb9949a174d2">More...</a><br/></td></tr>
<tr class="separator:a1f8ad7b8add515077367fb9949a174d2 inherit pub_methods_classcv_1_1Algorithm"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a763a62d1b03042eef7d7fc3ac6c87c79 inherit pub_methods_classcv_1_1Algorithm"><td align="right" class="memItemLeft" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="../../d3/d46/classcv_1_1Algorithm.html#a763a62d1b03042eef7d7fc3ac6c87c79">write</a> (const <a class="el" href="../../dc/d84/group__core__basic.html#ga6395ca871a678020c4a31fadf7e8cc63">Ptr</a>&lt; <a class="el" href="../../da/d56/classcv_1_1FileStorage.html">FileStorage</a> &gt; &amp;fs, const <a class="el" href="../../dc/d84/group__core__basic.html#ga1f6634802eeadfd7245bc75cf3e216c2">String</a> &amp;name=<a class="el" href="../../dc/d84/group__core__basic.html#ga1f6634802eeadfd7245bc75cf3e216c2">String</a>()) const</td></tr>
<tr class="memdesc:a763a62d1b03042eef7d7fc3ac6c87c79 inherit pub_methods_classcv_1_1Algorithm"><td class="mdescLeft"> </td><td class="mdescRight">simplified API for language bindings This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.  <a href="../../d3/d46/classcv_1_1Algorithm.html#a763a62d1b03042eef7d7fc3ac6c87c79">More...</a><br/></td></tr>
<tr class="separator:a763a62d1b03042eef7d7fc3ac6c87c79 inherit pub_methods_classcv_1_1Algorithm"><td class="memSeparator" colspan="2"> </td></tr>
</table><table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-static-methods"></a>
Static Public Member Functions</h2></td></tr>
<tr class="memitem:afe5442f5e86d02ca44f14a8026c021fb"><td align="right" class="memItemLeft" valign="top">static <a class="el" href="../../dc/d84/group__core__basic.html#ga6395ca871a678020c4a31fadf7e8cc63">Ptr</a>&lt; <a class="el" href="../../d5/d97/classcv_1_1img__hash_1_1RadialVarianceHash.html">RadialVarianceHash</a> &gt; </td><td class="memItemRight" valign="bottom"><a class="el" href="../../d5/d97/classcv_1_1img__hash_1_1RadialVarianceHash.html#afe5442f5e86d02ca44f14a8026c021fb">create</a> (double sigma=1, int numOfAngleLine=180)</td></tr>
<tr class="separator:afe5442f5e86d02ca44f14a8026c021fb"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="inherit_header pub_static_methods_classcv_1_1Algorithm"><td colspan="2" onclick="javascript:toggleInherit('pub_static_methods_classcv_1_1Algorithm')"><img alt="-" src="../../closed.png"/> Static Public Member Functions inherited from <a class="el" href="../../d3/d46/classcv_1_1Algorithm.html">cv::Algorithm</a></td></tr>
<tr class="memitem:a623841c33b58ea9c4847da04607e067b inherit pub_static_methods_classcv_1_1Algorithm"><td class="memTemplParams" colspan="2">template&lt;typename _Tp &gt; </td></tr>
<tr class="memitem:a623841c33b58ea9c4847da04607e067b inherit pub_static_methods_classcv_1_1Algorithm"><td align="right" class="memTemplItemLeft" valign="top">static <a class="el" href="../../dc/d84/group__core__basic.html#ga6395ca871a678020c4a31fadf7e8cc63">Ptr</a>&lt; _Tp &gt; </td><td class="memTemplItemRight" valign="bottom"><a class="el" href="../../d3/d46/classcv_1_1Algorithm.html#a623841c33b58ea9c4847da04607e067b">load</a> (const <a class="el" href="../../dc/d84/group__core__basic.html#ga1f6634802eeadfd7245bc75cf3e216c2">String</a> &amp;filename, const <a class="el" href="../../dc/d84/group__core__basic.html#ga1f6634802eeadfd7245bc75cf3e216c2">String</a> &amp;objname=<a class="el" href="../../dc/d84/group__core__basic.html#ga1f6634802eeadfd7245bc75cf3e216c2">String</a>())</td></tr>
<tr class="memdesc:a623841c33b58ea9c4847da04607e067b inherit pub_static_methods_classcv_1_1Algorithm"><td class="mdescLeft"> </td><td class="mdescRight">Loads algorithm from the file.  <a href="../../d3/d46/classcv_1_1Algorithm.html#a623841c33b58ea9c4847da04607e067b">More...</a><br/></td></tr>
<tr class="separator:a623841c33b58ea9c4847da04607e067b inherit pub_static_methods_classcv_1_1Algorithm"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a3ba305a10d02479c13cf7d169c321547 inherit pub_static_methods_classcv_1_1Algorithm"><td class="memTemplParams" colspan="2">template&lt;typename _Tp &gt; </td></tr>
<tr class="memitem:a3ba305a10d02479c13cf7d169c321547 inherit pub_static_methods_classcv_1_1Algorithm"><td align="right" class="memTemplItemLeft" valign="top">static <a class="el" href="../../dc/d84/group__core__basic.html#ga6395ca871a678020c4a31fadf7e8cc63">Ptr</a>&lt; _Tp &gt; </td><td class="memTemplItemRight" valign="bottom"><a class="el" href="../../d3/d46/classcv_1_1Algorithm.html#a3ba305a10d02479c13cf7d169c321547">loadFromString</a> (const <a class="el" href="../../dc/d84/group__core__basic.html#ga1f6634802eeadfd7245bc75cf3e216c2">String</a> &amp;strModel, const <a class="el" href="../../dc/d84/group__core__basic.html#ga1f6634802eeadfd7245bc75cf3e216c2">String</a> &amp;objname=<a class="el" href="../../dc/d84/group__core__basic.html#ga1f6634802eeadfd7245bc75cf3e216c2">String</a>())</td></tr>
<tr class="memdesc:a3ba305a10d02479c13cf7d169c321547 inherit pub_static_methods_classcv_1_1Algorithm"><td class="mdescLeft"> </td><td class="mdescRight">Loads algorithm from a String.  <a href="../../d3/d46/classcv_1_1Algorithm.html#a3ba305a10d02479c13cf7d169c321547">More...</a><br/></td></tr>
<tr class="separator:a3ba305a10d02479c13cf7d169c321547 inherit pub_static_methods_classcv_1_1Algorithm"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ad8c591bacb34c485f5b7a250c314fc53 inherit pub_static_methods_classcv_1_1Algorithm"><td class="memTemplParams" colspan="2">template&lt;typename _Tp &gt; </td></tr>
<tr class="memitem:ad8c591bacb34c485f5b7a250c314fc53 inherit pub_static_methods_classcv_1_1Algorithm"><td align="right" class="memTemplItemLeft" valign="top">static <a class="el" href="../../dc/d84/group__core__basic.html#ga6395ca871a678020c4a31fadf7e8cc63">Ptr</a>&lt; _Tp &gt; </td><td class="memTemplItemRight" valign="bottom"><a class="el" href="../../d3/d46/classcv_1_1Algorithm.html#ad8c591bacb34c485f5b7a250c314fc53">read</a> (const <a class="el" href="../../de/dd9/classcv_1_1FileNode.html">FileNode</a> &amp;fn)</td></tr>
<tr class="memdesc:ad8c591bacb34c485f5b7a250c314fc53 inherit pub_static_methods_classcv_1_1Algorithm"><td class="mdescLeft"> </td><td class="mdescRight">Reads algorithm from the file node.  <a href="../../d3/d46/classcv_1_1Algorithm.html#ad8c591bacb34c485f5b7a250c314fc53">More...</a><br/></td></tr>
<tr class="separator:ad8c591bacb34c485f5b7a250c314fc53 inherit pub_static_methods_classcv_1_1Algorithm"><td class="memSeparator" colspan="2"> </td></tr>
</table><table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pro-methods"></a>
Protected Member Functions</h2></td></tr>
<tr class="memitem:a6d4f61e91f813a42916e66ebf9f7f4bb"><td align="right" class="memItemLeft" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="../../d5/d97/classcv_1_1img__hash_1_1RadialVarianceHash.html#a6d4f61e91f813a42916e66ebf9f7f4bb">RadialVarianceHash</a> ()</td></tr>
<tr class="separator:a6d4f61e91f813a42916e66ebf9f7f4bb"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="inherit_header pro_methods_classcv_1_1img__hash_1_1ImgHashBase"><td colspan="2" onclick="javascript:toggleInherit('pro_methods_classcv_1_1img__hash_1_1ImgHashBase')"><img alt="-" src="../../closed.png"/> Protected Member Functions inherited from <a class="el" href="../../de/d29/classcv_1_1img__hash_1_1ImgHashBase.html">cv::img_hash::ImgHashBase</a></td></tr>
<tr class="memitem:acd86138597f1679b8ffb7a730a68761c inherit pro_methods_classcv_1_1img__hash_1_1ImgHashBase"><td align="right" class="memItemLeft" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="../../de/d29/classcv_1_1img__hash_1_1ImgHashBase.html#acd86138597f1679b8ffb7a730a68761c">ImgHashBase</a> ()</td></tr>
<tr class="separator:acd86138597f1679b8ffb7a730a68761c inherit pro_methods_classcv_1_1img__hash_1_1ImgHashBase"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="inherit_header pro_methods_classcv_1_1Algorithm"><td colspan="2" onclick="javascript:toggleInherit('pro_methods_classcv_1_1Algorithm')"><img alt="-" src="../../closed.png"/> Protected Member Functions inherited from <a class="el" href="../../d3/d46/classcv_1_1Algorithm.html">cv::Algorithm</a></td></tr>
<tr class="memitem:a68eeca71617474ad3d4561786f0289d2 inherit pro_methods_classcv_1_1Algorithm"><td align="right" class="memItemLeft" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="../../d3/d46/classcv_1_1Algorithm.html#a68eeca71617474ad3d4561786f0289d2">writeFormat</a> (<a class="el" href="../../da/d56/classcv_1_1FileStorage.html">FileStorage</a> &amp;fs) const</td></tr>
<tr class="separator:a68eeca71617474ad3d4561786f0289d2 inherit pro_methods_classcv_1_1Algorithm"><td class="memSeparator" colspan="2"> </td></tr>
</table><table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="inherited"></a>
Additional Inherited Members</h2></td></tr>
<tr class="inherit_header pro_attribs_classcv_1_1img__hash_1_1ImgHashBase"><td colspan="2" onclick="javascript:toggleInherit('pro_attribs_classcv_1_1img__hash_1_1ImgHashBase')"><img alt="-" src="../../closed.png"/> Protected Attributes inherited from <a class="el" href="../../de/d29/classcv_1_1img__hash_1_1ImgHashBase.html">cv::img_hash::ImgHashBase</a></td></tr>
<tr class="memitem:a3a6b4cc6dd3279018cefdf240c93e99c inherit pro_attribs_classcv_1_1img__hash_1_1ImgHashBase"><td align="right" class="memItemLeft" valign="top"><a class="el" href="../../dc/d84/group__core__basic.html#ga6395ca871a678020c4a31fadf7e8cc63">Ptr</a>&lt; ImgHashImpl &gt; </td><td class="memItemRight" valign="bottom"><a class="el" href="../../de/d29/classcv_1_1img__hash_1_1ImgHashBase.html#a3a6b4cc6dd3279018cefdf240c93e99c">pImpl</a></td></tr>
<tr class="separator:a3a6b4cc6dd3279018cefdf240c93e99c inherit pro_attribs_classcv_1_1img__hash_1_1ImgHashBase"><td class="memSeparator" colspan="2"> </td></tr>
</table>
<a id="details" name="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><p>Image hash based on Radon transform. </p>
<p>See <a class="el" href="../../d0/de3/citelist.html#CITEREF_tang2012perceptual">[239]</a> for details. </p>
</div><h2 class="groupheader">Constructor &amp; Destructor Documentation</h2>
<a id="a6d4f61e91f813a42916e66ebf9f7f4bb"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a6d4f61e91f813a42916e66ebf9f7f4bb">◆ </a></span>RadialVarianceHash()</h2>
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          <td class="memname">cv::img_hash::RadialVarianceHash::RadialVarianceHash </td>
          <td>(</td>
          <td class="paramname"></td><td>)</td>
          <td></td>
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<span class="mlabels"><span class="mlabel">inline</span><span class="mlabel">protected</span></span>  </td>
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</div><div class="memdoc">
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</div>
<h2 class="groupheader">Member Function Documentation</h2>
<a id="afe5442f5e86d02ca44f14a8026c021fb"></a>
<h2 class="memtitle"><span class="permalink"><a href="#afe5442f5e86d02ca44f14a8026c021fb">◆ </a></span>create()</h2>
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  <td class="mlabels-left">
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          <td class="memname">static <a class="el" href="../../dc/d84/group__core__basic.html#ga6395ca871a678020c4a31fadf7e8cc63">Ptr</a>&lt;<a class="el" href="../../d5/d97/classcv_1_1img__hash_1_1RadialVarianceHash.html">RadialVarianceHash</a>&gt; cv::img_hash::RadialVarianceHash::create </td>
          <td>(</td>
          <td class="paramtype">double </td>
          <td class="paramname"><em>sigma</em> = <code>1</code>, </td>
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          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">int </td>
          <td class="paramname"><em>numOfAngleLine</em> = <code>180</code> </td>
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        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td>
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<span class="mlabels"><span class="mlabel">static</span></span>  </td>
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</table><table class="python_language"><tr><th colspan="999" style="text-align:left">Python:</th></tr><tr><td style="width: 20px;"></td><td>retval</td><td>=</td><td>cv.img_hash.RadialVarianceHash_create(</td><td class="paramname">[, sigma[, numOfAngleLine]]</td><td>)</td></tr></table>
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</div>
<a id="aa85ee11346410e4bec2f437cb2e75e44"></a>
<h2 class="memtitle"><span class="permalink"><a href="#aa85ee11346410e4bec2f437cb2e75e44">◆ </a></span>getFeatures()</h2>
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          <td class="memname">std::vector&lt;double&gt; cv::img_hash::RadialVarianceHash::getFeatures </td>
          <td>(</td>
          <td class="paramname"></td><td>)</td>
          <td></td>
        </tr>
      </table>
</div><div class="memdoc">
</div>
</div>
<a id="ae8884fdd9bcb62286daf1a2461855317"></a>
<h2 class="memtitle"><span class="permalink"><a href="#ae8884fdd9bcb62286daf1a2461855317">◆ </a></span>getHash()</h2>
<div class="memitem">
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          <td class="memname"><a class="el" href="../../d3/d63/classcv_1_1Mat.html">cv::Mat</a> cv::img_hash::RadialVarianceHash::getHash </td>
          <td>(</td>
          <td class="paramname"></td><td>)</td>
          <td></td>
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<a id="a67e45e67643485206c3bd61109653162"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a67e45e67643485206c3bd61109653162">◆ </a></span>getNumOfAngleLine()</h2>
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          <td class="memname">int cv::img_hash::RadialVarianceHash::getNumOfAngleLine </td>
          <td>(</td>
          <td class="paramname"></td><td>)</td>
          <td> const</td>
        </tr>
      </table><table class="python_language"><tr><th colspan="999" style="text-align:left">Python:</th></tr><tr><td style="width: 20px;"></td><td>retval</td><td>=</td><td>cv.img_hash_RadialVarianceHash.getNumOfAngleLine(</td><td class="paramname"></td><td>)</td></tr></table>
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<a id="a163981931cdd85663d314ed006cae01c"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a163981931cdd85663d314ed006cae01c">◆ </a></span>getPixPerLine()</h2>
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          <td class="memname"><a class="el" href="../../d3/d63/classcv_1_1Mat.html">Mat</a> cv::img_hash::RadialVarianceHash::getPixPerLine </td>
          <td>(</td>
          <td class="paramtype"><a class="el" href="../../d3/d63/classcv_1_1Mat.html">Mat</a> const &amp; </td>
          <td class="paramname"><em>input</em></td><td>)</td>
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<a id="aeec876c879462e4d44bad94a46033786"></a>
<h2 class="memtitle"><span class="permalink"><a href="#aeec876c879462e4d44bad94a46033786">◆ </a></span>getProjection()</h2>
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          <td class="memname"><a class="el" href="../../d3/d63/classcv_1_1Mat.html">Mat</a> cv::img_hash::RadialVarianceHash::getProjection </td>
          <td>(</td>
          <td class="paramname"></td><td>)</td>
          <td></td>
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</div>
<a id="abe71d8fd951ee0c0277fea4f339e2242"></a>
<h2 class="memtitle"><span class="permalink"><a href="#abe71d8fd951ee0c0277fea4f339e2242">◆ </a></span>getSigma()</h2>
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          <td class="memname">double cv::img_hash::RadialVarianceHash::getSigma </td>
          <td>(</td>
          <td class="paramname"></td><td>)</td>
          <td> const</td>
        </tr>
      </table><table class="python_language"><tr><th colspan="999" style="text-align:left">Python:</th></tr><tr><td style="width: 20px;"></td><td>retval</td><td>=</td><td>cv.img_hash_RadialVarianceHash.getSigma(</td><td class="paramname"></td><td>)</td></tr></table>
</div><div class="memdoc">
</div>
</div>
<a id="a177638c49d134ca7f0e5624b30c8bff6"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a177638c49d134ca7f0e5624b30c8bff6">◆ </a></span>setNumOfAngleLine()</h2>
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          <td class="memname">void cv::img_hash::RadialVarianceHash::setNumOfAngleLine </td>
          <td>(</td>
          <td class="paramtype">int </td>
          <td class="paramname"><em>value</em></td><td>)</td>
          <td></td>
        </tr>
      </table><table class="python_language"><tr><th colspan="999" style="text-align:left">Python:</th></tr><tr><td style="width: 20px;"></td><td>None</td><td>=</td><td>cv.img_hash_RadialVarianceHash.setNumOfAngleLine(</td><td class="paramname">value</td><td>)</td></tr></table>
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<a id="a220ddf8070bf024ef24d23a14d41b9b7"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a220ddf8070bf024ef24d23a14d41b9b7">◆ </a></span>setSigma()</h2>
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          <td class="memname">void cv::img_hash::RadialVarianceHash::setSigma </td>
          <td>(</td>
          <td class="paramtype">double </td>
          <td class="paramname"><em>value</em></td><td>)</td>
          <td></td>
        </tr>
      </table><table class="python_language"><tr><th colspan="999" style="text-align:left">Python:</th></tr><tr><td style="width: 20px;"></td><td>None</td><td>=</td><td>cv.img_hash_RadialVarianceHash.setSigma(</td><td class="paramname">value</td><td>)</td></tr></table>
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</div>
<hr/>The documentation for this class was generated from the following file:<ul>
<li>opencv2/img_hash/<a class="el" href="../../d2/d76/radial__variance__hash_8hpp.html">radial_variance_hash.hpp</a></li>
</ul>
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